JP6157201B2 - 雑音を含む音声信号からコードに対応する特定周波数を検出する装置、プログラム及び方法 - Google Patents

雑音を含む音声信号からコードに対応する特定周波数を検出する装置、プログラム及び方法 Download PDF

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JP6157201B2
JP6157201B2 JP2013096562A JP2013096562A JP6157201B2 JP 6157201 B2 JP6157201 B2 JP 6157201B2 JP 2013096562 A JP2013096562 A JP 2013096562A JP 2013096562 A JP2013096562 A JP 2013096562A JP 6157201 B2 JP6157201 B2 JP 6157201B2
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specific frequency
power
code
frequency band
group tone
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JP2014220568A5 (https=
JP2014220568A (ja
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正樹 内藤
正樹 内藤
和之 田坂
和之 田坂
加藤　恒夫
恒夫 加藤
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KDDI Corp
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  • Telephone Function (AREA)
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JP2013096562A 2013-05-01 2013-05-01 雑音を含む音声信号からコードに対応する特定周波数を検出する装置、プログラム及び方法 Expired - Fee Related JP6157201B2 (ja)

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JP2013096562A JP6157201B2 (ja) 2013-05-01 2013-05-01 雑音を含む音声信号からコードに対応する特定周波数を検出する装置、プログラム及び方法

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JP2013096562A JP6157201B2 (ja) 2013-05-01 2013-05-01 雑音を含む音声信号からコードに対応する特定周波数を検出する装置、プログラム及び方法

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JP2014220568A JP2014220568A (ja) 2014-11-20
JP2014220568A5 JP2014220568A5 (https=) 2016-03-03
JP6157201B2 true JP6157201B2 (ja) 2017-07-05

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191862A (en) * 1978-08-07 1980-03-04 Rolm Corporation Dual frequency tone decoder
JPH0294743A (ja) * 1988-09-29 1990-04-05 Nec Corp Ｄｔｍｆ信号受信装置
JP2927565B2 (ja) * 1991-04-18 1999-07-28 シャープ株式会社 多周波信号受信装置
JP2859024B2 (ja) * 1992-02-28 1999-02-17 日本電気アイシーマイコンシステム株式会社 誤動作防止回路付きｄｔｍｆ受信器
JPH07212802A (ja) * 1994-01-26 1995-08-11 Japan Radio Co Ltd Ｄｔｍｆ信号検出装置及び方法
JPH07226779A (ja) * 1994-02-15 1995-08-22 Nec Eng Ltd 周波数検出回路

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